Java InetAddress Create getAddrInfo(InetAddress pAddr)

Description

get Addr Info

License

Apache License

Declaration

private static String getAddrInfo(InetAddress pAddr) throws SocketException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.lang.reflect.Method;
import java.net.*;

public class Main {
    private static Method isUp;
    private static Method supportsMulticast;

    private static String getAddrInfo(InetAddress pAddr) throws SocketException {
        String ret = pAddr.getHostName() != null ? pAddr.getHostName() + " (" + pAddr.getHostAddress() + ")"
                : pAddr.getHostAddress();
        ret += " [site-local: " + pAddr.isSiteLocalAddress() + ", link-local: " + pAddr.isLinkLocalAddress()
                + ", lb: " + pAddr.isLoopbackAddress() + "]";
        NetworkInterface nif = NetworkInterface.getByInetAddress(pAddr);
        ret += " -- nif: " + getNetworkInterfaceInfo(nif);
        return ret;
    }/*from  ww w  .j av a2 s .c  o m*/

    private static String getNetworkInterfaceInfo(NetworkInterface pNif) throws SocketException {
        if (pNif == null) {
            return "[null]";
        }
        return pNif.getDisplayName() + " [up: " + pNif.isUp() + ", mc: " + pNif.supportsMulticast() + ", lb: "
                + pNif.isLoopback() + ", hw: " + formatHwAddress(pNif.getHardwareAddress()) + "]";
    }

    private static String formatHwAddress(byte[] pHardwareAddress) {
        if (pHardwareAddress == null) {
            return "[none]";
        }
        StringBuilder sb = new StringBuilder(18);
        for (byte b : pHardwareAddress) {
            if (sb.length() > 0) {
                sb.append(':');
            }
            sb.append(String.format("%02x", b));
        }
        return sb.toString();
    }
}

Related

1. getActiveInterfaceInetAddresses()
2. getAddressInfoFindAll(Function convertValue, Predicate doBreak)
3. getAddressPriority(InetAddress addr)
4. getAllInetAddress(final String interfaceName)
5. getAllIPv4InetAddresses()
6. getAllLocalIPv4InetAddresses()
7. getBroadcast(InetAddress address)